Hi. On the second level of stairs, you have those three wall hangings. If you ran a blue tape paint line directly through the center square of all three wall ornaments you'd should have a profile approximate with the banister (thats what I thought at first. The wall color seems a good match right now for the banister hardware but if you need something easier on the eyes to transit the stairs, you could change the tone to the white of the lower wall. That large banana tree offers a chance to change white hue to something more white-green tint, or a very subtle aquamarine. Its a very blocky suggestion. I did this mod on ms paint so , just heads up. The black line indicates the high contrast change of paint tone. I made a gap for the plant but it should all be filled in behind it. I think the blue looks better with the plant and the wall than the green and then could be continued to the wall below it.

Hi! The SW Sea Salt looks like a great color for the bathroom and design plans! It's a bit lighter than the SW Oyster Bay which is perfect for a bathroom with limited natural light. It also resembles the green hue of SW Oyster Bay to create a cohesive style! From the shower, floor and counter design to the satin nickel of the faucet, SW Sea Salt seems like an excellent choice! Best of luck!

There are scores of paint colors that will work with your wood floor, however you selection for wall paint will NOT work with your travertine fireplace. Select a wall color with less gold in it https://athoughtfulplaceblog.com/talking-about-paint-pale-oak/ https://www.remodelaholic.com/color-spotlight-benjamin-moore-pale-oak/

You have two sources of natural light: the south facing window and the three windows/slider facing north. I always go with the dominant, which seems to be north. B.M. Abalone.